Particulate containment control method and platform device

Abstract

A mobile containment platform method and system for sandblasting and the like used in bridge reconditioning and painting that requires removal of paint from the support structure of the bridge. The containment platform provides a safe secure entrapment envelop for spent abrasive and removed paint residue.

We claim: 
     
       1. A method of establishing a self-contained mobile containment area under an existing structure for the capture and removal of spend sandblast abrasive and intrained contaminate within, the method comprising defining an enclosed space beneath and connected to the structrue using the existing structure support elements to define at least one portion of said enclosed space, establishing a support and containment interlocking platform grid supported by multiple pairs of spaced cable hook assemblies from said structure, sealing said enclosed space between said interlocking platform grid and said structure support, removing the spent sandblast abrasive and entrained contaminate from said enclosed space. 
     
     
       2. The method of establishing a self-contained mobile containment area beneath the structure of claim 1 wherein said support containment interlocking platform grid is comprised of multiple spaced parallel stage elements and interconnected right angularly extending secondary stage elements. 
     
     
       3. The method of claim 1 wherein said containment area includes catch tarps suspended between some of said interlocking platform elements. 
     
     
       4. The method of claim 1 further comprising erecting temporary wall means to define said enclosed space from said interlocking platform to said structure. 
     
     
       5. A system for establishing a self-contained mobile containment area, said system comprises a platform means suspended from a structure, said platform means including spaced multiple interconnecting support elements suspended in spaced relation under a structure, means for interlocking said spaced multipled support elements, means for moving said platform means relative said structure, sealing means for sealing said containment area between said platform means and said structure. 
     
     
       6. A system of claim 5 wherein means for interlocking said spaced multiple support elements to one another comprises engagement brackets, tie supports, cross fitting means and associated fasteners.